OK. I did the water candling. Confirmed that all were dead. I opened up all five eggs to find five fully formed chicks that never absorbed the yolk. So sad. What would cause the yolk to not absorb? It had been really hot here like 110 almost every day. I was wondering if that could have messed with things.
Sorry to hear that

If it was getting to be hot in the nesting box, that could be an issue. That kind of heat could kill a fully grown chicken, let alone a baby being smothered under an overheated hen. Too much heat during incubation causes weak embryos and late embryo death. Inadequate breeder diet for the hens who laid the eggs, poor egg storage, and shipped eggs also raise chances. I'm not sure if things like poor ventilation or humidity control would really apply to a broody, but they don't always get it right. For the whole hatch to have been a wash, though, I would blame the heat. It would take something dramatic to kill a whole clutch the same way.
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